Window-ventilator.



0. B. SABEL.

wmnow VENTILATOR. APPLICATION FILED AUG-3|, l9l7.

Patented. June 11, 1918.

INVENTOR m t: l w

OSCAR 1B. SAIBEL, 01? CHICAGO, ILLINOIS.

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Specification of Letters Patent.

Patented rm ii, rats.

Application filed. August 31, 1917. Serial Iil'o. 189,171.

To all whom it may concern:

Be it known that I, OSCAR B. SABEL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Window-Ventilators, of which the following is a specification.

This invention relates to pneumatics, and more especially to window ventilators; and the object of the same is to produce a ventilator which may be applied to the frame outside the upper portion of the upper sash in summer so that such sash may be drawn part way down to admit air, but the device will exclude flies and rain and will not darken the room.

These objects are accomplished by the construction hereinafter described and claimed, and as shown in the drawings wherein- Figure 1 is a vertical section through the upper portion of a window equipped with this invention.

Fig. 2 is a detail of one end plate, Fig. 3 a perspective detail of one of the glass-retainin strips, and Fig. 4 an enlarged section one of the channel strips.

The window frame is designated by the letter F, and we are concerned only with theupper sash U less the opening exposed when the lower sash is raised will be covered by a screen in summer, because without it the screen hereinafter described would not alone be ,efl'ective for excluding flies; but the ordinary windowv screen for the lower sash is too well known to need illustration and description here.

Coming now to the present invention, 1 provide two sheet metal end plates 1, each substantially triangular or 'preferablysecand these are'to be.

tor-shaped as shown, secured along their upright edges by fastening devices such as nails or screws 2 passing into the side bars of the frame F. Their oblique edges are bent inward into flanges 3, and the curved edges are at the bottom as seen in Fig 1. To the innner face of each plate is secured a strip 4 of lL-shaped cross section, best seen in detail in Fig. 3, one leaf lying against the plate and the other leaf standing parallel with and slightly below the flange 3 so as to produce a channel; and the two channels receive the ends of a strip of glass 5 perhaps ten inches wide and of a length equal to the width of the window frame. Theupper edge of the and its glass Gr. Doubtglass extends beneath the top bar T of the frame, and may well be held in place by a supporting strip 6 as seen in Fig. 1. So much of my invention as has thus far been described constitutes in efl'ect a hood or bonnet approximating the shape of a small awn' and standing outside the upper portion of the upper sash. The latter may now be drawn down slightly and obviously rain cannot enter the house because of the presence' of the end plates and the glass, and yet there is no obstruction to the light. When the upper for ventilation may pass in under the glass and over the sash.

The outer corners of the plates 1 and the lower ends of the strips 4: are. connected by a transverse strip 10 whose section is best shown in Fig. 4, and its purpose is to brace the plates and also to receive the lower edge of the glass. Connected with this strip is a sheet of netting preferably formed of wire screening indicated at 11, the same extending thence inward and connected at its ends in any suitable manner with the curved lower edges of the plates. In Fig. 1, l have indicated connecting means at the points 12, and details are not essential. A 13 connects the inner corners of the plates and supports the screen near the inner edge of the latter, but the screen is purposely carried inward some little distance beyond this cross bar and its free edge It is folded over upon itself in a bead which will lie in contact with the glass G. Therefore the sash U may be moved up and down for a considerable distance without its upper rail striking the free edge 14:. If this sash has upright stiles dividing its glass into panes, the edge 14 will be notched to receive each stile-the obvious purpose being that such edge shall make a close wiping contact with the upper sash so as to exclude flies and other insects. That portion of my invention described in this paragraph coacts with the features above in the exclusion of insects which might fly under the glass, upward through the bonnet or hood, and into the house through the openin exposed when the upper sash is opened, an yet the screen will not interfere with the ventilation and casts little if any shadow and therefore may be said hardly to obstruct the light. All parts of the structure are fire proof, and should be made water proof and rust proof, and further details are not essential.

sash is thus opened, air

cross bar What is claimed is:

.The herein described window ventilator comprising sector-shaped end plates Whose upright edges are adapted to be secured to the sides of a Window frame at its top, an imperforate strip connecting the oblique outer edges of said plates, a cross bar connecting the lower inner corners of said 1 plates, and a sheet of screening extending from plate to plate, leading from the loweredge of said strip to and fastened to said cross bar and having its free edge projecting .inward beyond such bar into Wiping contact with the glass of the upper Window sash. 1 

